OP33.01: A different and even better way of doing your measures on 4D view software
Christiane Simioni, Lara Díaz Martínez, Luciano Marcondes Machado Nardozza, E. Araujo, Antônio Fernandes Moron · Ultrasound in Obstetrics and Gynecology · 2011
Compare two ways of off-line measurements on three-dimensional (3D) ultrasound volumes on 4D View software (General Electric, Medical Systems Kretz, Zipf, Austria): standard optical mouse versus digital pen tablet, a tool used by designers to draw on the computer. This study enrolled 60 patients with singleton pregnancies, with healthy fetuses from 20 to 34 weeks of pregnancy. The measure of the vertebral body area (from L1 to S2) on a volume of 3D ultrasound acquired using Volume Contrast Imaging C-plane (VCI-C) feature on a Voluson 730 Pro (General Electric, Medical Systems Kretz, Zipf, Austria) was performed using both a standard optical mouse (Microsoft 200 model, 500 dpi) and a digital pen tablet (Intuos 4 from Wacon, 5080 lpi—lines per inch, pen accuracy of ± 0.01 in). The measures were done contouring the shape of the vertebral body. Exams were performed by only one experienced observer in Fetal Medicine. Agreement of the measurement techniques was evaluated with intraclass correlation coefficients (ICC). The area of 420 vertebral bodies were measured (60 for each level from L1 to S2) offline on 4D View software, two times with the mouse and two times with the digital pen tablet. ICC of each pair of measures for all levels were better for the digital pen tablet (0.934 to 0.990) than for the mouse (0.910 to 0.982). studies with 3D image volumes are increasingly a routine part of Fetal Medicine specialists. We are used to work with the standard optical mouse on computer, but measuring the vertebral bodies, that have an irregular shape, the digital pen tablet showed to be more reproducible, comfortable, less tiring over long periods of use, and even nicer to work. It really is a good alternative to standard optical mouse.